Swelling of the middle finger of the right hand, in general, the common clinical causes are as follows: first, purulent dactylitis, most often seen in the right hand finger skin breaks, did not cause the patient to pay enough attention. Bacteria localized in the skin enter the tissue space along the breach, causing acute purulent infection. At this time, the finger can show obvious swelling, pain, and elevated skin temperature. It is necessary to make a longitudinal incision along both sides of the finger as soon as possible, drain the subcutaneous fluid and pus, and strengthen the anti-infection treatment. Finger swelling symptoms, generally in 5-7 days can slowly subside. Second, the patient accidentally fell, resulting in a fracture of the right middle finger, can also cause local bleeding, manifested as swelling symptoms. At this time, the patient often combined with severe pain, it is recommended that the patient improve the X-ray or CT examination, to clarify the specific circumstances of the fracture. If necessary, surgery should be performed to restore the continuity of the bone of the right middle finger. Postoperative anti-infective and rehydration supportive therapy is given to promote the faster subsidence of the swelling symptoms of the finger.